Stainless steel plate calendering device

Abstract

The utility model relates to the technical field of calendering, and discloses a stainless steel plate calendering device. Comprising a workbench, the upper surface of the workbench is fixedly connected with a first supporting plate, the front surface of the first supporting plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first extrusion roller, and the front surface of the first supporting plate is slidably connected with a sliding plate. When the sliding plate is pushed downwards, the sliding plate can drive a second motor and a second extrusion roller to move downwards, the sliding plate can drive a connecting plate to move, and a fixing seat is pushed towards one side, so that the fixing seat can penetrate through the connecting plate and extend into a first supporting plate to fix the sliding plate; and the fixed plate can be rotated to one side of the magnetic block, and the magnetic block and the fixed plate can be attracted and fixed by pushing the fixed seat, so that the rolling thickness of the stainless steel plate can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of calendering, in particular to a stainless steel plate calendering device. Background Art

[0002] The stainless steel plate calendering forming device is an auxiliary device used in the production and processing of stainless steel plates to calender thicker plates into thinner plates for subsequent use. It has been widely used in the field of steel processing technology, such as the patent subject "A 304 stainless steel plate calendering device", application number "202321633055.7". By setting an electric push rod and an auxiliary plate, during the calendering process, the electric push rod can drive the auxiliary plate to automatically rise and fall, so that the auxiliary plate can automatically fix and release the stainless steel plate. There is no need to manually disassemble the auxiliary plate, which reduces the work intensity of the staff and improves the practicality and functionality of the device. However, during the calendering process of the stainless steel plate, the calendering thickness of the stainless steel cannot be adjusted, which results in the calendering of the stainless steel plate being relatively limited. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a stainless steel plate rolling device, which is convenient for adjusting the rolling thickness of the stainless steel plate, so that the practicability of the device can be improved, and the above-mentioned technical problems are solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a workbench, the upper surface of the workbench is fixedly connected to a first support plate, the front surface of the first support plate is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a first squeezing roller, the front surface of the first support plate is slidably connected to a slide plate, the front surface of the slide plate is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a second squeezing roller, both sides of the slide plate are fixedly connected to connecting plates, the interior of the connecting plate is slidably connected to a fixed seat, the side surface of the fixed seat is movably connected to the fixing plate through a bearing, the side surface of the connecting plate is provided with a magnetic block, and the magnetic block and the connecting plate are attracted to each other;

[0005] The upper surface of the workbench is fixedly connected to a second support plate, the rear surface of the second support plate is movably connected to a smoothing roller, the upper surface of the workbench is fixedly connected to a third support plate, and the rear surface of the third support plate is movably connected to a flattening roller via a bearing.

[0006] By means of the above technical scheme, the slide plate is pushed downward, and when the slide plate is pushed downward, the slide plate can drive the second motor and the second extrusion roller to move downward, so that the distance between the first extrusion roller and the second extrusion roller can be adjusted, and the fixed seat is pushed to one side so that the fixed seat can extend through the connecting plate into the interior of the first support plate to fix the slide plate, and the movement of the fixed plate can be used to rotate the fixed plate to one side of the magnetic block, and the fixed seat can be pushed so that the magnetic block can be attracted and fixed to the fixed plate, and the first motor and the second motor can be started to respectively drive the first extrusion roller and the second extrusion roller to rotate, so that the first extrusion roller and the second extrusion roller can perform calendering on the stainless steel plate, and when the stainless steel plate is calendered, the calendered stainless steel plate can be placed on the upper surface of the smoothing roller for smoothing and conveying, and when the stainless steel plate is smoothed and conveyed, the stainless steel plate can be placed on the lower surface of the flattening roller, so that the extrusion marks produced by the calendering of the stainless steel plate can be flattened.

[0007] As the preferred technical solution of the utility model, the upper surface of the workbench is fixedly connected to a support frame, the upper surface of the workbench is fixedly connected to a placement seat, the inner top wall of the support frame is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to an extrusion seat, and the extrusion seat is located above the placement seat.

[0008] Through the above technical solution, starting the electric push rod can push the extrusion seat to move downward. When the extrusion seat moves downward, the extrusion seat can extrude the stainless steel plate on the surface of the seat, so that the stainless steel plate can be pre-rolled during rolling, thereby improving the rolling efficiency of the stainless steel plate.

[0009] As a preferred technical solution of the utility model, an adjustment plate is slidably connected inside the second support plate, a cross plate is fixedly connected to the upper surface of the adjustment plate, a spring is fixedly connected to the lower surface of the cross plate, an end of the spring away from the cross plate is fixedly connected to a load-bearing seat, and a fastening plate is fixedly connected to the lower surface of the load-bearing seat.

[0010] Through the above technical scheme, the elasticity of the spring is utilized to make the fastening plate fit with the surface of the stainless steel plate. When the fastening plate fits with the surface of the stainless steel plate, the weight of the load-bearing seat is utilized to make the fastening plate completely fit with the surface of the stainless steel plate. Since the surface of the stainless steel plate is uneven during rolling, the fastening plate can bounce up and down to squeeze the spring, so that the stainless steel plate is not easily deviated during smoothing and transportation.

[0011] As a preferred technical solution of the utility model, the front surface and the rear surface of the fastening plate are fixedly connected to the first movable plate, the side surface of the first movable plate is movably connected to the bearing plate via a bearing, the upper surface of the bearing plate is fixedly connected to the second movable plate, and the second movable plate is fixedly connected to the cross plate.

[0012] Through the above technical solution, the activities of the first movable plate, the second movable plate and the bearing plate are utilized to pull the bearing plate to support the fastening plate, and the bearing plate can be used to limit the elastic movement of the fastening plate.

[0013] As an optimal technical solution of the utility model, the side surface of the workbench is fixedly connected to a metal plate, the upper surface of the metal plate is slidably connected to a movable plate, the upper surface of the movable plate is fixedly connected to a limiting block, and the inner bottom wall and the inner top wall of the limiting block are fixedly connected to a cutting knife.

[0014] Through the above technical solution, the edge of the stainless steel plate is placed on the surface of the limit block. When the stainless steel plate is rolled up, the cutting knife is affected by the movement of the stainless steel plate, so that the cutting knife can cut the edge of the stainless steel plate, and the limit seat can limit the stainless steel plate, thereby improving the quality of the stainless steel plate when the stainless steel plate is rolled up.

[0015] As a preferred technical solution of the utility model, the front surface and the rear surface of the movable plate are fixedly connected with a threaded plate, the internal threads of the threaded plate are connected with a threaded rod, and the end of the threaded rod away from the threaded plate is in contact with the upper surface of the metal plate.

[0016] Through the above technical solution, the threaded rod is twisted so that it can penetrate the interior of the threaded plate and fit and squeeze the surface of the metal plate, so that the threaded rod can fix the movable plate once.

[0017] As a preferred technical solution of the utility model, a bonding plate is sleeved on the side surface of the threaded rod, a rubber block is provided on the lower surface of the bonding plate, and the rubber block is bonded to the surface of the metal plate.

[0018] Through the above technical solution, the threaded rod is twisted to push the bonding plate to move downward. When the bonding plate moves downward, the bonding plate can drive the rubber block to move and fit the surface of the metal plate, thereby increasing the friction between the moving plate and the metal plate.

[0019] Compared with the prior art, the utility model provides a stainless steel plate rolling device having the following

[0020] Beneficial effects:

[0021] 1. The utility model can push the slide plate downward according to the rolling demand of the stainless steel plate. When the slide plate is pushed downward, the slide plate can drive the second motor and the second extrusion roller to move downward, so that the distance between the first extrusion roller and the second extrusion roller can be adjusted. When the slide plate is moving, the slide plate can drive the connecting plate to move. After the distance between the first extrusion roller and the second extrusion roller is adjusted, the fixing seat is pushed to one side so that the fixing seat can extend through the connecting plate into the interior of the first supporting plate to fix the slide plate. By utilizing the movement of the fixing plate, the fixing plate can be rotated to one side of the magnetic block, and the fixing seat is pushed so that the magnetic block can be attracted and fixed to the fixing plate, thereby facilitating the adjustment of the rolling thickness of the stainless steel plate.

[0022] 2. After the stainless steel plate is rolled, the utility model can use an external rolling device to roll up the rolled stainless steel plate. When the stainless steel plate is rolled up, the sliding of the movable plate can be used to adjust the distance between the movable plates, and the edge of the stainless steel plate is placed on the surface of the limit block. Through the rolling of the stainless steel plate, the cutting knife is affected by the movement of the stainless steel plate, so that the cutting knife can cut the edge of the stainless steel plate, and the limit seat can limit the stainless steel plate, thereby improving the quality of the stainless steel plate when the stainless steel plate is rolled up. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0025] Figure 3 It is a side view structural diagram of the horizontal plate of the utility model;

[0026] Figure 4 This is a schematic diagram of the metal plate structure of the utility model;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure at point B in the middle.

[0028] Wherein: 1. workbench; 2. placement seat; 3. extrusion seat; 4. electric push rod; 5. support frame; 6. second extrusion roller; 7. first support plate; 8. smoothing roller; 9. horizontal plate; 10. third support plate; 11. metal plate; 12. flattening roller; 13. second support plate; 14. first motor; 15. first extrusion roller; 16. second motor; 17. slide plate; 18. magnetic block; 19. fixed seat; 20. fixed plate; 21. connecting plate; 22. moving plate; 23. cutting knife; 24. limit block; 25. threaded rod; 26. laminating plate; 27. rubber block; 28. threaded plate; 29. ​​adjusting plate; 30. bearing plate; 31. second movable plate; 32. spring; 33. load-bearing seat; 34. fastening plate; 35. first movable plate. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0030] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1-2A stainless steel plate rolling device comprises a workbench 1, a first support plate 7 is fixedly connected to the upper surface of the workbench 1, a first motor 14 is fixedly connected to the front surface of the first support plate 7, a first extrusion roller 15 is fixedly connected to the output end of the first motor 14, a slide plate 17 is slidably connected to the front surface of the first support plate 7, a second motor 16 is fixedly connected to the front surface of the slide plate 17, a second extrusion roller 6 is fixedly connected to the output end of the second motor 16, a connecting plate 21 is fixedly connected to both sides of the slide plate 17, a fixed seat 19 is slidably connected to the inside of the connecting plate 21, a fixed plate 20 is movably connected to the side surface of the fixed seat 19 through a bearing, a magnetic block 18 is arranged on the side surface of the connecting plate 21, and the magnetic block 18 and the connecting plate 21 are attracted to each other;

[0033] The upper surface of the workbench 1 is fixedly connected to a second support plate 13, the rear surface of the second support plate 13 is movably connected to a smoothing roller 8, the upper surface of the workbench 1 is fixedly connected to a third support plate 10, the rear surface of the third support plate 10 is movably connected to a flattening roller 12 via a bearing.

[0034] The stainless steel plate is placed between the first extrusion roller 15 and the second extrusion roller 6. According to the rolling requirements of the stainless steel plate, the slide plate 17 can be pushed downward. When the slide plate 17 is pushed downward, the slide plate 17 can drive the second motor 16 and the second extrusion roller 6 to move downward, so that the distance between the first extrusion roller 15 and the second extrusion roller 6 can be adjusted. When the slide plate 17 is moving, the slide plate 17 can drive the connecting plate 21 to move. After the distance between the first extrusion roller 15 and the second extrusion roller 6 is adjusted, the fixing seat 19 is pushed to one side so that the fixing seat 19 can penetrate the connecting plate 21 and extend into the interior of the first support plate 7 to fix the slide plate 17. The movement of the fixing plate 20 can be used to rotate the fixing plate 20. To one side of the magnetic block 18, push the fixing seat 19 so that the magnetic block 18 can be attracted and fixed to the fixing plate 20, so as to facilitate the adjustment of the rolled thickness of the stainless steel plate, connect the first motor 14 and the second motor 16 to the external power supply, start the first motor 14 and the second motor 16 to respectively drive the first extrusion roller 15 and the second extrusion roller 6 to rotate, so that the first extrusion roller 15 and the second extrusion roller 6 can roll the stainless steel plate, when the stainless steel plate is rolled, the rolled stainless steel plate can be placed on the upper surface of the smoothing roller 8 for smoothing and conveying, when the stainless steel plate is smoothed and conveyed, the stainless steel plate can be placed on the lower surface of the flattening roller 12, so that it can flatten the extrusion marks produced by the rolling of the stainless steel plate.

[0035] See also Figure 1 A support frame 5 is fixedly connected to the upper surface of the workbench 1, a placement seat 2 is fixedly connected to the upper surface of the workbench 1, an electric push rod 4 is fixedly connected to the inner top wall of the support frame 5, an extrusion seat 3 is fixedly connected to the output end of the electric push rod 4, and the extrusion seat 3 is located above the placement seat 2.

[0036] Before the stainless steel plate is rolled, the stainless steel plate can be placed on the surface of the placement seat 2, and the electric push rod 4 can be connected to the external power supply. The electric push rod 4 can be started to push the extrusion seat 3 to move downward. When the extrusion seat 3 moves downward, the extrusion seat 3 can extrude the stainless steel plate on the surface of the placement seat 2, so that the stainless steel plate can be pre-rolled during rolling, thereby improving the rolling efficiency of the stainless steel plate.

[0037] See also Figure 3 The second support plate 13 is internally slidably connected with an adjustment plate 29, the upper surface of the adjustment plate 29 is fixedly connected with a transverse plate 9, the lower surface of the transverse plate 9 is fixedly connected with a spring 32, the end of the spring 32 away from the transverse plate 9 is fixedly connected with a load-bearing seat 33, and the lower surface of the load-bearing seat 33 is fixedly connected with a fastening plate 34.

[0038] When the stainless steel plate is placed on the upper surface of the smoothing roller 8, the elasticity of the spring 32 is used to make the fastening plate 34 fit with the surface of the stainless steel plate. When the fastening plate 34 fits with the surface of the stainless steel plate, the weight of the load-bearing seat 33 is used to make the fastening plate 34 completely fit with the surface of the stainless steel plate. Since the surface of the stainless steel plate is uneven during rolling, the fastening plate 34 can bounce up and down to squeeze the spring 32, so that the stainless steel plate is not easily deviated during smoothing and conveying.

[0039] See also Figure 3 The front and rear surfaces of the fastening plate 34 are fixedly connected with the first movable plate 35, the side surface of the first movable plate 35 is movably connected with the bearing plate 30 through a bearing, the upper surface of the bearing plate 30 is fixedly connected with the second movable plate 31, and the second movable plate 31 is fixedly connected to the horizontal plate 9.

[0040] When the fastening plate 34 bounces up and down, the first movable plate 35, the second movable plate 31 and the bearing plate 30 can be used to pull the bearing plate 30 to support the fastening plate 34, and the bearing plate 30 can be used to limit the bounce of the fastening plate 34.

[0041] See also Figure 4-5 A metal plate 11 is fixedly connected to the side surface of the workbench 1, a movable plate 22 is slidably connected to the upper surface of the metal plate 11, a limiting block 24 is fixedly connected to the upper surface of the movable plate 22, and a cutting knife 23 is fixedly connected to the inner bottom wall and the inner top wall of the limiting block 24.

[0042] After the stainless steel plate is rolled, it can be rolled up by an external rolling device. When the stainless steel plate is rolled up, the sliding of the movable plate 22 can be used to adjust the distance between the movable plates 22, and the edge of the stainless steel plate is placed on the surface of the limit block 24. Through the rolling of the stainless steel plate, the cutting knife 23 is affected by the movement of the stainless steel plate, so that the cutting knife 23 can cut the edge of the stainless steel plate, and the limit seat can limit the stainless steel plate, thereby improving the quality of the stainless steel plate when the stainless steel plate is rolled up.

[0043] See also Figure 4-5 The front and rear surfaces of the movable plate 22 are fixedly connected with a threaded plate 28 , the internal threads of the threaded plate 28 are connected with a threaded rod 25 , and one end of the threaded rod 25 away from the threaded plate 28 is in contact with the upper surface of the metal plate 11 .

[0044] When the distance between the moving plates 22 is adjusted, the threaded rod 25 is screwed so that it can penetrate the inside of the threaded plate 28 and fit and squeeze the surface of the metal plate 11 , so that the threaded rod 25 can fix the moving plate 22 once.

[0045] See also Figure 4-5 A bonding plate 26 is sleeved on the side surface of the threaded rod 25 , a rubber block 27 is provided on the lower surface of the bonding plate 26 , and the rubber block 27 is bonded to the surface of the metal plate 11 .

[0046] The threaded rod 25 is screwed to push the bonding plate 26 to move downward. When the bonding plate 26 moves downward, the bonding plate 26 can drive the rubber block 27 to move and fit the surface of the metal plate 11, thereby increasing the friction between the movable plate 22 and the metal plate 11, so that the movable plate 22 can be fixed again.

[0047] When in use, a stainless steel plate is placed on the surface of the placement seat 2, and the electric push rod 4 is started to push the extrusion seat 3 to move downward. When the extrusion seat 3 moves downward, the extrusion seat 3 can extrude the stainless steel plate on the surface of the placement seat 2, so that the stainless steel plate can be pre-calendered during calendering. The stainless steel plate is placed between the first extrusion roller 15 and the second extrusion roller 6, and the slide plate 17 is pushed downward. When the slide plate 17 is pushed downward, the slide plate 17 can drive the second motor 16 and the second extrusion roller 6 to move downward, so that the distance between the first extrusion roller 15 and the second extrusion roller 6 can be adjusted. When the slide plate 17 is moving, the slide plate 17 can drive the connecting plate 21 to move. When the distance between the first squeezing roller 15 and the second squeezing roller 6 is adjusted, the fixing seat 19 is pushed to one side so that the fixing seat 19 can penetrate the connecting plate 21 and extend into the interior of the first supporting plate 7 to fix the slide plate 17. The movement of the fixing plate 20 can be used to rotate the fixing plate 20 to one side of the magnetic block 18, and the fixing seat 19 is pushed so that the magnetic block 18 can be attracted and fixed to the fixing plate 20. The first motor 14 and the second motor 16 are started to respectively drive the first squeezing roller 15 and the second squeezing roller 6 to rotate. The first squeeze roller 15 and the second squeeze roller 6 can be moved to calender the stainless steel plate. After the stainless steel plate is calendered, the calendered stainless steel plate can be placed on the upper surface of the smoothing roller 8 for smoothing and conveying. The elasticity of the spring 32 is used to make the fastening plate 34 fit with the surface of the stainless steel plate. When the fastening plate 34 fits with the surface of the stainless steel plate, the weight of the bearing seat 33 is used to make the fastening plate 34 completely fit with the surface of the stainless steel plate. Since the surface of the stainless steel plate is uneven during calendering, the fastening plate 34 can bounce up and down to squeeze the spring 32, so that the stainless steel plate It is not easy to deviate during smoothing and conveying. After the stainless steel plate is smoothed and conveyed, the stainless steel plate can be placed on the lower surface of the flattening roller 12 so that the extrusion marks produced by the rolling of the stainless steel plate can be flattened. The stainless steel plate after rolling can be rolled up by an external winding device. When the stainless steel plate is rolled up, the sliding of the movable plate 22 can be used to adjust the distance between the movable plates 22, and the edge of the stainless steel plate is placed on the surface of the limit block 24. Through the rolling of the stainless steel plate, the cutting knife 23 is affected by the movement of the stainless steel plate, so that the cutting knife 23 can cut the edge of the stainless steel plate.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stainless steel plate rolling device, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly connected to a first support plate (7), the front surface of the first support plate (7) is fixedly connected to a first motor (14), the output end of the first motor (14) is fixedly connected to a first squeezing roller (15), the front surface of the first support plate (7) is slidably connected to a slide plate (17), the front surface of the slide plate (17) is fixedly connected to a second motor (16), the output end of the second motor (16) is fixedly connected to a second squeezing roller (6), both sides of the slide plate (17) are fixedly connected to connecting plates (21), the interior of the connecting plate (21) is slidably connected to a fixed seat (19), the side surface of the fixed seat (19) is movably connected to a fixed plate (20) via a bearing, and the side surface of the connecting plate (21) is provided with a magnetic block (18), and the magnetic block (18) and the connecting plate (21) are attracted to each other; The upper surface of the workbench (1) is fixedly connected to a second support plate (13), the rear surface of the second support plate (13) is movably connected to a smoothing roller (8), the upper surface of the workbench (1) is fixedly connected to a third support plate (10), and the rear surface of the third support plate (10) is movably connected to a flattening roller (12) via a bearing.

2. A stainless steel plate rolling device according to claim 1, characterized in that: The upper surface of the workbench (1) is fixedly connected to a support frame (5), the upper surface of the workbench (1) is fixedly connected to a placement seat (2), the inner top wall of the support frame (5) is fixedly connected to an electric push rod (4), the output end of the electric push rod (4) is fixedly connected to an extrusion seat (3), and the extrusion seat (3) is located above the placement seat (2).

3. The stainless steel plate rolling device according to claim 1, characterized in that: The second support plate (13) is slidably connected to an adjustment plate (29) inside, the upper surface of the adjustment plate (29) is fixedly connected to a transverse plate (9), the lower surface of the transverse plate (9) is fixedly connected to a spring (32), one end of the spring (32) away from the transverse plate (9) is fixedly connected to a load-bearing seat (33), and the lower surface of the load-bearing seat (33) is fixedly connected to a fastening plate (34).

4. A stainless steel plate rolling device according to claim 3, characterized in that: The front surface and the rear surface of the fastening plate (34) are both fixedly connected to a first movable plate (35); the side surface of the first movable plate (35) is movably connected to a bearing plate (30) via a bearing; the upper surface of the bearing plate (30) is fixedly connected to a second movable plate (31); and the second movable plate (31) is fixedly connected to the transverse plate (9).

5. The stainless steel plate rolling device according to claim 1, characterized in that: The side surface of the workbench (1) is fixedly connected to a metal plate (11), the upper surface of the metal plate (11) is slidably connected to a movable plate (22), the upper surface of the movable plate (22) is fixedly connected to a limit block (24), and the inner bottom wall and the inner top wall of the limit block (24) are both fixedly connected to a cutting knife (23).

6. A stainless steel plate rolling device according to claim 5, characterized in that: The front surface and the rear surface of the movable plate (22) are both fixedly connected with a threaded plate (28), the internal threads of the threaded plate (28) are connected with a threaded rod (25), and one end of the threaded rod (25) away from the threaded plate (28) is in contact with the upper surface of the metal plate (11).

7. A stainless steel plate rolling device according to claim 6, characterized in that: A bonding plate (26) is sleeved on the side surface of the threaded rod (25), a rubber block (27) is provided on the lower surface of the bonding plate (26), and the rubber block (27) is bonded to the surface of the metal plate (11).

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